305012144 has 20 divisors (see below), whose sum is σ = 592618320. Its totient is φ = 152078400.

The previous prime is 305012129. The next prime is 305012153. The reversal of 305012144 is 441210503.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20807 + ... + 32294.

It is an arithmetic number, because the mean of its divisors is an integer number (29630916).

Almost surely, 2^305012144 is an apocalyptic number.

It is an amenable number.

305012144 is a deficient number, since it is larger than the sum of its proper divisors (287606176).

305012144 is a wasteful number, since it uses less digits than its factorization.

305012144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53468 (or 53462 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 305012144 is about 17464.5968748208. The cubic root of 305012144 is about 673.1404834982.

Adding to 305012144 its reverse (441210503), we get a palindrome (746222647).

The spelling of 305012144 in words is "three hundred five million, twelve thousand, one hundred forty-four".